#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(int argc,char* argv[])
{   
    unsigned int i=101,n=1;
    while(i)
    {   
        i--;
        n=n+i;
    }
    n=--n;
    printf("和=%u\n",n);
    return 0;
}